I have read several postings in reference to "brain fog." I have been on levoxyl (62.5 mcg)for 8 weeks now, and have noticed an improvment in my hypo symptoms. However, on three different occasions (each lasting about 30 minutes), I have gone through this weird spell. My head does not hurt, but I feel "disconnected," kind of like my thought process is in a trance. It becomes a real chore just to think, and my body certainly does not feel like doing much either. Is is the so-called brain fog others have referred to, and is it a symptom of hythroidism or a side effect of levoxyl?